The limited aspect is important so that the employee knows what's monitored. Employees are not forced to store private data on work devices or engage in private

The limited aspect is important so that the employee knows what's monitored. Employees are not forced to store private data on work devices or engage in private conversations. All my employees are regularly reminded that work equipment is work equipment and that we have access to it and will in certain cases use that access. I'll try not to go through their private stuff, but if there's something I urgently need from their device (or account) and they're not able to provide it (1) I'll have to. If you send private conversation via a company account you know what you sign up for. (1) for any reason, ranging from extended holidays away from the internet to "this person is no longer among us".